Fibre Channel and Converged Network Adapters for VMware ESX/ESXi 4.0 User’s Guide
ISL
ISP
Intelligent storage peripheral. QLogic trademark and family of Fibre Channel and SCSI controller chips that replace network interface chips in network adapters, servers, and storage.
LAN
Local area network. Network typically with transmissions less than 5 km.
L_Port
Loop port. Does arbitrated loop functions and protocols. NL_Ports and FL_Ports are examples of
LIP
Loop initialization process. The initializa- tion process in an arbitrated loop that occurs when the loop is powered up or a new device is added. One function of a LIP is to assign addresses. All data transmis- sion on the loop is suspended during a LIP.
local area network
See LAN.
loop initialization process
See LIP.
logical unit number
See LUN.
loopback
Diagnostic tool that routes transmit data through a loopback connector back to the same adapter.
LUN
Logical unit number, a subdivision of a SCSI target. It is the small integer handle that differentiates an individual disk drive or partition (volume) within a common SCSI target device such as a disk array.
Technically, a LUN can be a single physical disk drive, multiple physical disk drives, or a portion (volume) of a single physical disk drive. However, LUNs are typically not entire disk drives but rather virtual partitions (volumes) of a RAID set.
Using LUNs, the Fibre Channel host can address multiple peripheral devices that may share a common controller.
media
message signaled interrupts
See
MSI/MSI-X
Message signaled interrupts. An alternate way of generating an interrupts with special messages to allow PCI to emulate a pin assertion or deassertion. Message signaled interrupts allow the device to write a small amount of data to a special address in memory space. The chipset will deliver the corresponding interrupt to a CPU.
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